I wanto access CMWX1ZZABZ-091 Murata module using AT command. what is the minimum circuitry do i need to use AT command?

[TVard.1]

To access AT command i have USB to UART FTDI adaptor from sparkfun.

do i need to put firm ware inside chip for AT command for Lora?

do i need to connect crystal osc of 8Mhz to work with AT command.

No AT response from module in COM PORT Arduino!

[Tesla DeLorean]

The device has a TCXO (32 MHz) on-board, as I recall the Sigfox firmware required the external loop back to be connected.

https://wireless.murata.com/pub/RFM/data/type_abz.pdf

The LoRa firmware, at least the original ones did not.

If you're using the Murata part directly you should probably be having the support conversation with them. ST has it's LRWAN software library, and you can rebuild that to suit specific needs/requirements.

[TVard.1]

how can i access it via UART ? CMWX1ZZABZ

[Tesla DeLorean]

STM32CubeExpansion_LRWAN_V1.3.1\Projects\B-L072Z-LRWAN1\Applications\LoRa\AT_Slave

Uses LPUART1 on PA2/PA3 at 9600 8N1

[TVard.1]

Pa2/PA3 are usart2 in CMWX1ZZABZ. didnt work!